The fly is not actually a true Munro Killer, but a variant of the original, which has a GP topping tail and a blue guinea-fowl front hackle, and omits the crystal hair. Additionally, I've tied these using arctic fox for wing and hackle, as per the article by Poul Jorgensen in the recent Fly Fishing and Fly Tying magazine - the original has a conventional squirrel tail wing. It's one of my favorite salmon patterns, particularly for the end of the season; I usually tie it on doubles or tubes (it looks good on the Loop ‘brass bottle’ tubes). This is the first time I’ve used a hair hackle on it, and I’m quite pleased with the result, though it remains to be seen whether the fish agree with me!

The winging and hackling are where the fly diverges from the traditional tying method:
Underwing: A few strands of gold crystal hair under yellow arctic fox tail.
Hackle: Orange arctic fox spun into a dubbing loop and wound on over the underwing.
Overwing: Black arctic fox tail. This is first tied in pointing forwards over the eye of the hook with several turns of thread. The ends are trimmed and the wing is then pulled back and a few further turns taken over the base of the hair before forming the head.

This technique results in a wing that stands up more than usual, which should help maintain some volume in fast water and give it some extra 'kick'.